Super easy
Algebra
Level
2
Let \(ab=1\), Define
\[ P=\frac{a}{a+1}+\frac{b}{b+1} \text{ and } Q=\frac{1}{a+1}+\frac{1}{b+1}.\]
What can we say about \(P\) and \(Q\)?
by
Zhou ZeHao